Charlie and Adam have the same amount of money.
Charlie spends $30 and Adam spends $60.
In the end, Charlie has 4 times as much money as Adam.
- How much does each of them have at first?
- How much does Charlie have more than Adam in the end?
|
Charlie |
Adam |
Before |
4 u + 30 |
1 u + 60 |
Change |
- 30 |
- 60 |
After |
4 u |
1 u |
(a)
At first
Amount that Charlie has = Amount that Adam has
4 u + 30 = 1 u + 60
4 u - 1 u = 60 - 30
3 u = 30
1 u = 30 ÷ 3 = 10
Amount that each of them has at first
= 1 u + 60
= 10 + 60
= $70
(b)
Amount that Charlie has more than Adam in the end
= 4 u - 1 u
= 3 u
= 3 x 10
= $30
Answer(s): (a) $70; (b) $30